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N43<br />
N21<br />
N31<br />
N42<br />
N23<br />
Nó “3” Forças Verticais (V) Forças Verticais (H)<br />
N31+N32.cos71,57°+N34 = 0<br />
= 0<br />
ΣFV = 0 ΣFH = 0<br />
N32 = 0 -<br />
-16,3+0.cos.71,57°+N34<br />
N34 = 16,3 kN<br />
Nó “4” Forças Verticais (V) Forças Verticais (H)<br />
N43+N42.cos71,57°+N45 = 0<br />
= 0<br />
N32<br />
N34<br />
ΣFV = 0 ΣFH = 0<br />
N42 = 0 -<br />
-16,3+0.cos.71,57°+N45<br />
N45 = 16,3 kN<br />
Nó “2” Forças Verticais (V) Forças Verticais (H)<br />
15<br />
15<br />
N24<br />
N45<br />
N26<br />
N25<br />
ΣFV = 0 ΣFH = 0<br />
-15-N21.sen45°-N23.sen71,57°-N24.sen71,57°-N25.sen45°=0 -N21.cos45°-<br />
N23.cos71,57°+N26+N25.cos45°+N24.cos71,57° = 0<br />
-15-(-23).sen45°-0-0-N25.sen45°=0 -(-23).cos45°-<br />
0+N26+2,29.cos45°+0=0<br />
N32<br />
N42<br />
N21 N23 N24<br />
N25<br />
N25 = 1,62÷sen45° N26+16,26+1,62 = 0<br />
N25 = 2,29 KN N26 = -17,88 KN<br />
N21<br />
N23<br />
N31<br />
N31<br />
N32<br />
N34<br />
N32<br />
N34<br />
N26<br />
N25<br />
N24<br />
43
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